Filter



FIG. 1 is a perspective view of the claimed design;

FIG. 2 is a front view of the claimed design of FIG. 1;

FIG. 3 is a rear view of the claimed design of FIG. 1;

FIG. 4 is a side view of the claimed design of FIG. 1;

FIG. 5 is another side view of the claimed design of FIG. 1;

FIG. 6 is a top view of the claimed design of FIG. 1; and,

FIG. 7 is a bottom view of the claimed design of FIG. 1.

The broken line showing of a filter is included for the purposes of illustrating portions of the article and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a filter, as shown and described. 